EV Battery Charging Current Control After Abnormal Termination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Eco-friendly vehicle battery charging is often incomplete due to insufficient available charging current, requiring manual adjustment by users, leading to either incomplete charging with high current settings or prolonged charging times with low current settings.
Innovation Solution
A system and method that automatically adjusts the charging current based on received available charging current information, using an on-board charger and controller to compare abnormal termination currents with stored normal current values, adjusting the required charging current to ensure stable battery charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the user sets the charging current to be high, then the charge time is reduced, but charging may fail to be completed due to insufficient available charging current
Solution Approach 1:
The controller performs preliminary actions by storing multiple charging current values and available charging current information before charging starts. When charging is abnormally terminated, the controller retrieves and compares these pre-stored values to determine the appropriate charging current, eliminating the need for manual user adjustment and preventing charging failure.
Solution Approach 2:
The system implements feedback by comparing the abnormal charging current (when charging terminates prematurely) with stored normal charging current values. Based on this comparison, the controller automatically adjusts the charging current to an appropriate level, ensuring charging completion while minimizing charge time. This closed-loop feedback mechanism prevents both over-current charging failures and excessive charge times.
2Reliability
If the user sets the charging current to be low, then charging completion is ensured, but the charge time increases
Solution Approach 1:
The system dynamically adjusts the charging current based on real-time conditions rather than using a fixed low current setting. The controller selects from multiple pre-stored charging current values, comparing them with the abnormal charging current to determine the optimal current that ensures charging completion while minimizing charge time. This dynamic adjustment eliminates the need for manual low-current settings.
Solution Approach 2:
The controller changes the charging current parameter automatically by retrieving and comparing multiple pre-stored charging current values with the abnormal charging current. This parameter adjustment ensures that the charging current is optimized for each charging session, preventing both charging failure and excessive charge time that occur with fixed low-current settings.
3Ease of operation
If manual adjustment of charging current is required, then the user can control charging, but the operation becomes complex and time-consuming
Solution Approach 1:
The system performs self-service by automatically managing the entire charging current adjustment process without user intervention. The controller stores multiple charging current values, detects abnormal termination, compares currents, and automatically selects the appropriate charging current. This eliminates the need for users to manually adjust charging current, simplifying operation and saving time.
Solution Approach 2:
The automatic feedback mechanism continuously monitors charging status and compares abnormal charging current with stored values, enabling the controller to autonomously determine and adjust the charging current. This eliminates manual user control requirements while ensuring optimal charging performance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables stable and efficient battery charging by automatically adjusting the charging current, preventing incomplete charging and optimizing charge time, by comparing abnormal currents with stored values and updating information for future charging sessions.
Implementation Method 1
an on-board charger (OBC) mounted in the vehicle, setting a required charging current based on available charging current information received from a power supply unit supplying power for charging the battery
Data Source
AI summary
A system for controlling charging of a battery of an eco-friendly vehicle includes: an on-board charger (OBC) mounted in the vehicle, setting a required charging current based on available charging current information received from a power supply unit supplying power for charging the battery, transmitting the required charging current to the power supply unit, and converting the power supplied from the power supply unit to charge the battery; and a controller determining whether charging of the battery is completed, and when it is determined that charging of the battery is abnormally terminated in a state where charging is not completed, changing the required charging current to charge the battery based on first information supplied from the power supply unit upon abnormal termination of charging and based on second information supplied from the power supply unit upon normal completion of charging.